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INSTALLATION INSTRUCTIONS
NI SCB-264X
Shielded Connector Block for the NI PXI-2532
References to the NI TB-264X in this document do not include the NI TB-2645. The
Note
NI TB-2645 is not compatible with the NI SCB-264X.
This document describes how to install and connect signals to the
National Instruments SCB-264X shielded connector block. Use the
NI SCB-264X to interface individual signal wires to the rows and columns
of the NI PXI-2532 matrix.
The NI SCB-264X has five ribbon cable connectors for connecting to the
NI TB-2640/2641/2642/2643/2644 (NI TB-264X) connector blocks and
screw terminals for connecting signals. The NI SCB-264X supports all
NI PXI-2532 topologies that are configured with the NI TB-264X. The
NI SCB-264X can be used alone, or it can be rack-mounted using the
included DIN rail-mounting kit.
Refer to the NI Switches Getting Started Guide to determine when to install
the NI SCB-264X. Visit
switching solutions.
for information about other
ni.com/switches
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Summary of Contents for NI SCB-264X
- Page 1 NI SCB-264X can be used alone, or it can be rack-mounted using the included DIN rail-mounting kit. References to the NI TB-264X in this document do not include the NI TB-2645. The Note NI TB-2645 is not compatible with the NI SCB-264X.
- Page 2 1. Unpack the Shielded Connector Block Remove the NI SCB-264X from the package and inspect it for loose components or any sign of damage. Notify NI if the NI SCB-264X appears damaged in any way. Caution Do not install a damaged shielded connector block into your system.
- Page 3 • Installation instructions for the NI TB-264X you are using, accessible ni.com/manuals • Ribbon cables (not included) Refer to Table 1 for information about ordering ribbon cables for the NI SCB-264X. Note • 1/8 in. flathead screwdriver • #1 Phillips screwdriver •...
- Page 4 To use the NI SCB-264X, you must connect to the NI PXI-2532 through one of the NI TB-264X terminal block accessories listed in Table 1. To connect the NI SCB-264X to the NI TB-264X, refer to Figures 1 and 2 while completing the following steps: Gather the ribbon cables required for connecting the NI SCB-264X to the NI TB-264X.
- Page 5 The installation location of each cable must be consistent with the connections made Note inside the NI TB-264X. Use the designators on the NI SCB-264X printed circuit board to ensure the correct location of each cable. LOWER J2 and LOWER J3 refer to the J2 and J3 connectors on the lower column connection board of the NI TB-264X;...
- Page 6 MAX 60V/CAT 1 MAX 0.5A PER CHANNEL 1 Screw Terminals 4 Safety Ground Lug 2 Strain-Relief Screws 5 Ribbon Cable Connectors 3 Strain-Relief Bar 6 Node Terminals Figure 2. NI SCB-264X Parts Locator Diagram NI SCB-264X Installation Instructions ni.com...
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Page 7: Connect Signals
5. Connect Signals To connect signals to the NI SCB-264X, refer to Figures 1 and 2 while completing the following steps: Prepare the signal wire by stripping the insulation no more than 7 mm from the end of the wire. - Page 8 Table 2. 1-Wire 4 × 128 Configuration (NI TB-2640) SCB-264X Channel SCB-264X Channel SCB-264X Channel SCB-264X Channel SCB-264X Channel Name Name Name Name Name Name Name Name Name Name E.28 C100 D.26 C.09 B.11 B.01 E.27 C101 D.25 C.10 B.12 B.02...
- Page 9 Table 3. 1-Wire 8 × 64 Configuration (NI TB-2641) SCB-264X Channel SCB-264X Channel SCB-264X Channel SCB-264X Channel SCB-264X Channel Name Name Name Name Name Name Name Name Name Name E.28 D.26 C.09 B.11 B.01 E.27 D.25 C.10 B.12 B.02 E.26 D.24...
- Page 10 Table 4. 1-Wire 16 × 32 Configuration (NI TB-2642) SCB-264X Channel SCB-264X Channel SCB-264X Channel SCB-264X Channel SCB-264X Channel Name Name Name Name Name Name Name Name Name Name E.28 D.26 C.09 B.11 B.01 E.27 D.25 C.10 B.12 B.02 E.26 D.24...
- Page 11 Table 5. 2-Wire 4 × 64 Configuration (NI TB-2643) SCB-264X Channel SCB-264X Channel SCB-264X Channel SCB-264X Channel SCB-264X Channel Name Name Name Name Name Name Name Name Name Name E.28 C50+ D.26 C35+ C.09 C20+ B.11 B.01 E.27 C50– D.25 C35–...
- Page 12 Table 6. Dual 4 × 64 Configuration (NI TB-2643) SCB-264X Channel SCB-264X Channel SCB-264X Channel SCB-264X Channel SCB-264X Channel Name Name Name Name Name Name Name Name Name Name E.28 B0C50 D.26 B0C35 C.09 B0C20 B.11 B0C5 B.01 B0C0 E.27 B1C50 D.25...
- Page 13 Table 7. 2-Wire 8 × 32 Configuration (NI TB-2644) SCB-264X Channel SCB-264X Channel SCB-264X Channel SCB-264X Channel SCB-264X Channel Name Name Name Name Name Name Name Name Name Name E.28 D.26 C.09 C20+ B.11 B.01 E.27 D.25 C.10 C20– B.12 C5–...
- Page 14 Table 8. Dual 8 × 32 Configuration (NI TB-2644) SCB-264X Channel SCB-264X Channel SCB-264X Channel SCB-264X Channel SCB-264X Channel Name Name Name Name Name Name Name Name Name Name E.28 D.26 C.09 B0C20 B.11 B0C5 B.01 B0C0 E.27 D.25 C.10 B1C20 B.12...
- Page 15 6. Connect the NI TB-264X to the NI PXI-2532 To connect the NI TB-264X to the NI PXI-2532, refer to the appropriate installation instructions for your NI TB-264X. Figure 3 illustrates the NI SCB-264X connected to the NI PXI-2532 through the NI TB-2640.
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Page 16: Specifications
DC path resistance ........<2.0 Ω + cable resistance National Instruments, NI, ni.com, and LabVIEW are trademarks of National Instruments Corporation. Refer to the Terms of Use section on ni.com/legal for more information about National Instruments trademarks. Other product and company names mentioned herein are trademarks or trade names of their respective companies.
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